Power-transmitting mechanism for metal-working machines.



PATENTED JULY '7, 1908.

G. 0. GRIDLEY.

WORKING MACHINES.

POWER TRANSMITTING MEG HANISM FOR METAL APPLICATION FILED JULY 1, 1907.

5 SHEETS-SHEET l;

at Q Q PATENTED JULY 7, 1908.

G. O. GRIDLEY.

WORKING MACHINES.

POWER TRANSMITTING MEOHANISMTOR METAL APPLICATION FILED JULY 1, 1907.

6 SHEBTSSHEET 2.

No. 892,662. PATENTED JULY 7, 1908.

G. 0. GRIDLEY.

POWER TRANSMITTING MECHANISM FOR METAL WORKING MACHINES.

APPLICATION FILED JULY 1, 1907 5 SHEETS-SHEET 3.

, 'WYQM PATENTED JULY 7, 1908.

G. 0. GRIDLEY. POWER TRANSMITTING MECHANISM FOR METAL WORKING MA OHINBS.

AFPLICATION FILED JULY 1, 1907.

5 SHEETS-SHEET 4.

' No. 892,662. PATENTED JULY 7, 1908.

G. 0. GRIDLEY. POWER- TRANSMITTING MECHANISM FOR METAL WORKING MACHINES.

APPLICATION FILED JULY 1, 1907.

5 SHEETS-SHEET 5.

GEORGE OTIS GRIDLEY,'OF WINDSOR, VERMONT.

POWER-TRANSMITTING MECHANISM FOR METAL-WORKING MACHINES.

Specification of Letters Patent. Application filed. July 1, 1907. Serial No. 881,600.

Patented July 7, 1908.

To all whom it may concern:

Be it known that I, GEORGE OTIs GRIDLEY,

of W'indsor, in the county of WVindsor and chines, or other machines in which it is desirable or necessary toimpart any one of several speeds to a driven member or element.

In my co ending apphcation, Serial No.

381,599: file( July 1,1907,I have illustrated and described a multi-spindle screw machine, in which a mechanism embodying the present invention may be utilized, said machine comprising a prime power shaft or member, from which power is transmitted to the ,work spindles, a shaft, which may be termed the driven element or memhenan independently actuated auxiliary or supplemental driving member, and means by which .the driven element or member maybe ac" tuated by either of said driving members. A feed or cam shaft, which asdescribed in said application, carries oractuates the mechanism by which the tool slide is fed towards the work and returned, the turret is rotated; and the stock feeding mechanism is controlled, is geared to said driven shaft so as to be actuated thereby.

The present invention comprises said independent driving members and said driven shaft I or member; and further comprises variable speed mechanism interposed betweenthe prime ower shaft and the driven shaft, so that the atter may be driven at any one of various speeds from said prime power shaft.

The invention also comprises other features of construction and arrangement of parts, as illustrated upon the accompanying drawings, described in the following specification and pointed out in the appended claims.

Referring to the accompanying drawings 'Figure 1 illustrates in on view a metal resent invention.

a section through the variable speed gearing. Fig. 6 represents a'section on the line 6-6 of Fig. 3. Fig. 7 represents a section on the line 77 of Fig. 3. Fig. 8 represents a rear elevation of the power transmitting mechanism. Fig. 9 shows in detail the cam which controls the independently driven member.

Before describing the invention in detail I desire to have it understood that the invention is not limited to the particular construction and arrangement of parts which I have illustrated and shall hereinafter describe, and that various changes may be made in the mechanism shown without departing from the spirit or scope of the invention, and that the phraseology which I employ is for the purpose of description and not of limitation.

I have not illustrated the entire machine to which the invention is shown as applied, but reference may be had to mysaid accompanying application for an illustration and description thereof.

On the accompanying drawings,10 indicates' the prime power shaft or driving member, from which power is transmitted to some of the operative parts of the machine, as, for instance, the work spindles (not shown).

This shaft is suitably journaled and is equipped with a driving pulley 11. Arranged transversely to the prime power shaft or driving member 10 is the driven shaft or member 12, which extendsfrom front to rear of the machine, and which is equipped with a worm 13 which intermeshes with anddri'ves a worm wheel 14. As shown in Figs. 1 and 2 the said worm wheel 14 is keyed upon a feed or cam shaft 15,from which power may be transmitted to effect the feeding of the tool slide, the rotation of the turret and the control of the stockfeeding mechanism of a multi-spindle machine.

Loosely journaled upon the driven shaft 12 is a supplemental or auxiliary driving member, consisting, in the present instance, of a pulley 16, which is actuated independently of the pulley 11 at a relatively high speed.-

shift said lever, and thereby throw the clutch of the two positions to which it maybe shaft 12 (see Fig. 6).

moved.

Referring a ain to the prime power shaft 10, it-Will be 0 served that there is mounted, upon it a worm 25, which engages and drives a worm wheel 26 rigidly secured upon a shaft 27, which is arranged in parallelism with the Between this shaft 27 and the shaft 12 is interposed variable speed gearing, so that the shaft 12 may be driven from the shaft 27 at any one of a plurality of speeds. Splined upon the shaft 27 is a gear 28 located between the 'two arms 29 29 of a yoke 30 which is hung loosely on said shaft. Likewise hung upon the shaft is another yoke 31 having the arms 32 32 which are separated far enough apart to permit of an axial movement of the yoke 30 between them. The yoke 31 carries ashaft 33 journaled therein, upon which are rigidly secured'three gears 34 35 36 of different diameters. The yoke 30 likewise carries a shaft 37, on which is rigidly secured a gear wheel 38, which is in constant intermeshed relation with the gear 28, as shown in Fig. 5. The two gears 28 and 38. may be moved axially of the shaft 27 so as to cause the gear 38 to be intermeshed with either the gear 34, the gear 35 or the gear 36, so as to effect the rotation of the shaft 33 at any one of three different speeds.

As shown in Fig. 7, there is placed upon the end of the driven shaft or member 12, a

sleeve 39, upon which are keyed six gears of different diameters, as indicated by 40, 41, 42, 43, 44, and 45. The, yoke 32 is movable axially and also about the shaft 27 for the purpose of meshing the gear 34 with any one of said gears 40 to 45, inclusive. The end .of the sleeve 39 projects beyond the gear 45, and is formed with teeth so as to constitute a ratchet 46 with which a pawl 47, pivoted upon a collar 48 keyed to the shaft 12, may

engage, so that when the sleeve 39 is rotated, it will efiect the rotation of theshaft 12, although said shaft may be freely rotated in the direction of rotation of the sleeve 39 at a higher speed than that at which the sleeve 39 is rotated. By the provision of the two cones of gears thus described, one comprising three gears and the other six gears, the shaft 12 may be rotated thereby at any one of v eighteen different speeds.

For the purpose of holding the yokes in the different positions to which they may be moved, I employ the following devices. Encircling the variable speed gearing is a hood or casing, indicated as a whole at 50. It has a, peripheral wall or segment 51, in which there is an irregularly shaped aperture 52,

eeaeea through which the handle 53 of the yoke 31 notches or recesses 54 to receive the shank of the handle 53. In line with each notch or recess is an aperture 55, into which may enter the locking pin of a latch 56 pivoted to the handle 53 of the yoke 51. There are as many. notches 54 as there are gears on the sleeve 39, and the notches are so arranged in relation to the gears that when the handle 53 of the yoke 31 is in any one of them, the gear one of the gears on the sleeve 39.

The yoke 31 is provided with lateral arms 60 61, on which is,formed or secured a semicylindrical segment or web 62, concentric with the axis of the shaft 27. In this web there is an'aperture 63 through which extends thehandle 6-4 of the yoke 30. Fingers 65 extending into said aperture provide three separate notches 66 to receive the handle 64. In line with each notch there is an aperture 67 to receive the locking pin of the latch 68 pivoted to the handle 64. may be located at any one of the three notches, and locked to the web or segment 62 with the gear 38 carried by the yoke 29 in ingears 34 35 36. Although the yokev 30 is movable with respect to the yoke 31, yet the two yokes may be locked together so that when the yoke 31 is moved, it carries the yoke From the description which I have given of the power transmitting mechanism, it is evident that the driven shaft or member,12

shaft 10 or else by the inde endent driving member or element 16'; and t at the member or element 16 may be clutched to the shaft 12 to drive it at a higher speed than that at which it was being driven from the prime power shaft without manually disconnecting the prime power shaft therefrom. Hence the cam or feed shaft 15 may be automatically driven during a portion of its rotation at a predetermined rate of speed entirely irrespective of the rate of speed at which it was previously driven from the prime power shaft; in other words, entirely irrespective of the speed at which the shaft 12 is rotated by the variable speed gearing, the clutching of the auxiliary driving member or pulley 16 to the'shaft 12 causes it to be rotated at a preways he the same, and which bears no necessary ratio to the speed at which it was previously driven. 4 I claim: a

1. A power transmitting mechanism for gnetal working machines, comprising a'prime pnwer shaft, a driven shaft, an inde endently driven high speed pulley on said riven shaft, a clutch on said shaft associated with The handle 64 termeshed relation with any one of the three.

30 with it to whatever position it is adjusted.

extends.- Extending into the aperture are fingers which form between them a series of 34 carried by said yoke, Will-be engaged with may be actuated either by the prime power determined high rate of speed which will alsaid pulley, and ower transmitting mechr anism interposed etween said prime power shaft and said-driven shaft.

2. A power transmitting mechanism for metal working machines, comprising a prime powershaft, a driven shaft arranged transversely thereof, a worm on the driving shaft, a worm wheel engaged therewith, and 'variand said driven shaft.

A power transmitting mechanism, comprising a driven strait, a cone of gears there- .abl espeed gearing between said worm wheel on, adrivin'g'shaft, a gear on the driving shaft, a oke pivoted on said driving shaft and slide 1e thereon, a cone of gears carried bysaid yoke, of which one may be inter- -meshed with any one of the gears of the first mentionedicone, a'second yok'e' ivoted on the driving shaft, a gear carried t ereby and engaged with the gear on the driving shaft an adapted to be engaged with any one of the gears of the secon mentioned cone, and instrumentalities for locking said. yokes in position, A v 3 r 4. A wer' transmittinginechanism, comprising a driven shaft, a cone of gears thereon, a driving shaft, a gear on the driving shaft? a yoke pivoted on said driving shaft and slidable thereon, a cone of gearscarried by said yoke, of which one-may beinterj meshed with any one of the gears of the first mentioned cone, a second yoke ivoted on the driving shaft, a gear carried t ereby and engaged with the gear on the driving shaft and adapted to be engaged with any one of gears carriedby said yokes, means foriockmg said yokes together in different relative positions, and means for locking one-of said yokes to a stationary'parh 6. In a variable speed ower transmitting mechanism, a driving sha t, a gear thereon, a

cone-of drivgn gears, a yoke pivoted on said shaft, a sec'ond cone of ears carried b said yoke, of which one mayhe engaged wit any one of the ears of the first mentionedcone,

saidyoke laying, a segment, a second yoke pivoted on said shaft, a gear carried by said second yoke intermeshin with the gear on the driving shaft, and a apted to be inter-. meshed with any gear of the second men-' tioned cone, meansfor locking the second 69 yoke to the segment of the first yoke, a sta-- tionary segment, and means for locking the first yoke to said stationary segment.

{In testimony whereof I have afiixed my signature, in presence oi two, witnesses.

GEORGE OTIS GRIDLEY.

.Witnesses WALTER J. SAXIE, f RUTH P. KEYns. 

